Electric-arc lamp.



L. C. H. MENSING. ELECTRIC ARC LAMP.

APPLICATION FILED OUT. 2a, 1910.

Patented June 27, 1911.

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ELECTRIC ARC LAMP. APPLICATION FILED 001. 2a, 910'.

Patented'June27, 1911.

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UNITED STAYEES PATENT OFFICE.

LOUIS CARL HENRY MENSING, 0F EDINBURGH, SCOTLAND.

ELECTRIC-ARC LAMP.

Specification of Letters Patent.

Patented June 27, 1911.

Application filed October 28, 1910. 'Serial No. 589,550.

This invention relates to that class of electric arc lamps set forth in my British Patent No. 32 13 of 1904, and in my corresponding U. S. Patent N 0. 881,015, granted March 3, 1908.

The present invention consists of an improvement in the magazines which hold the carbons, the object being to insure the carbons being more positively fed without fear of their becoming held or jammed, thus adding more to the efficiency in the working of the lamp.

My invention will be clearly understood from the following description aided by the accompanying drawings in which Figure 1 is an elevation of my improved construction of case or magazine for carrying the carbons which are shown in dotted lines. Fig. 2 is a plan of Fig. 1. Fig. 3 is a view similar to Fig. 1 but with rollers at one edge for easier self feeding of the carbons which are shown in dotted lines. Fig. 4 is an elevation of the working parts of an electric arc lamp showing one of my magazines in position. Fig. 5 is a view of the lamp parts at right angles to Fig. 4.

For the purpose of this invention 1 construct in the top and bottom angled cross members A, B, of each magazine a smooth surfaced track O, D, in each of which I place a ball E, F, somewhat weighty in character, the balls E, F acting against the carbons G and pressing them uniformly toward the edge of the magazine next to the guide or feed tube H of the lamp, the degree of pressure not being of such a character as to cause any jamming or holding of the carbons G together but just sufiicient to keep the carbons G in their proper position with relation to each other and allow of a free falling or sliding of the end carbon down the tube for feed purposes.

The tracks C, D, for holding the balls E, F, may be formed from cut away portions in each wall of the angled cross members A, B, of the magazine, and the edge of the magazine may be bulged or widened as at I, J, at the upper edges of the tracks C, D, to continue said tracks and allow of a full supply of carbons being in each magazine. The edge K of the magazine next the feed or guide tube may be provided with a series of rollers L, as at Fig. 8, against which the end carbon G can move for more easier feeding, but if the interior of the magazineis made perfectly smooth these-rollers are not required, as the carbons G move together under the action of the balls E, F, and the end one lowers to feed quite easily.

Each magazine is provided with a short split socket M at its lower end by which it can be secured to the feed or guide tube H of the lamp, the split socket M being tightened by a screw N as will be well understood.

The balls E, F, in each magazine may be of the same or of different sizes and weights.

The construction of the lamp proper is the same as in my prior patents above identified except that balance weights P are employed instead of spring contacts to act as brakes to the carbons, and a one sided stirrup instead of a double stirrup with or with out a china or snake stone saddle for evenly striking the arc.

What I do claim as my invention and desire to secure by Letters Patent is 1. A magazine for containing arc lamp carbons provided with a feed tube for said carbons located at its lower end at the foot of one of its vertical edges, and with a track inclined downwardly toward said edge; and a ball arranged to travel along said track for pressing the carbons toward said edge in position to feed through said tube.

2. A magazine for containing arc lamp carbons provided at its upper and lower ends with tracks inclined downwardly toward one of its vertical edges, and with a feed tube located at the foot of said edge; and a ball arranged to travel along each of said tracks for pressing the carbons uniformly toward said edge in position to feed through said tube.

3. A magazine for containing arc lamp carbons comprising a pair of vertical side members arranged in spaced parallel relation to each other and connected along one edge, said members having oppositely-disposed portions thereof cut away to produce a track lnclined downwardly toward said In testimony whereof I have hereunto set my hand in presence of two subscribing witedge; a feed tube located at the foot of said nesses. ec ge; and a ball arranged to travel along LOUlS CARL HENRY MENSING said track for pressing the carbons toward Vitnesses:

said edge in position to feed through said RICHARD CORE GARDNER, tube.

PERCY E. MA'r'rooKs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

